use smallvec::SmallVec;

fn main() {
    let input = "0123456";
    let collected: SmallVec<char, 4> = input
        .chars()
        .collect();

    println!("{collected:?}");
    // expected: ['0', '1', '2', '3', '4', '5', '6']
    // actual:   ['0', '1', '2', '3', '5', '6']
}